What was the SIZE of the Gray Upland-ground-like bird you saw in Wisconsin?

Gray Partridge: Gray-brown ground bird with rufous face and throat. Body complexly barred and streaked with red and white. Dark red belly patch. Legs and feet are yellow-orange. Prefers to walk rather than fly. Introduced to North America as a game bird in the early 1900s. AKA Hungarian Partridge.